Window assembly



July 7, 1959 J. MARCHBANK WINDOW ASSEMBLY 2 Sheets-Sheet 1 Filed Feb. l2, 1957 July 7, 1959 J. MARCHBANK WINDOW ASSEMBLY Filed Feb. l2, 1957 5 l f 5 r 2 Sheets-Sheet 2 4.United Sfatspat to Frederick Braby and Company Limited, London, England, a company of Great Britain Application February 12, '1.957, serial No. 639,701

s claims. (ci. 20v-52.4)

This invention relates to a window assembly.

A window assembly according to the invention includes two window jambs supporting an upper sash and a lower sash, at least one of the sashes being movable in grooves presented by the jambs, and at least one friction member mounted directly in each jamb and engageable directly with the movable sash.

The window assembly may incorporate a transom, and the transom may carry a lock in the form of a vertical rod penetrating the transom and carrying at each end a radial arm, the upper arm supporting a spring-loaded pin engageable with a socket in the transom when the arms project at right angles to the planes of the sashes.

The transom may be formed with at least one transverse passage, and obturator means may be movable to close the passage.

A practical embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a view looking from the inside of a window assembly, Fig. 2 is a section through the line 2--2 in Fig. l, Fig. 3 is a section through a line 3-3 in Fig. l, and Fig. 4 is a sectional view in perspective through a transom formed with a transverse passage.

In the drawings, 1 and 2 denote upper and lower sashes respectively slidable in grooves presented by window jambs each consisting of an outer channel 3 having inwardly-extending flanges and an inner channel 4 having outwardly-extending flanges and located within the bosom of the outer channel in spaced relation to its flanges, the toes or edges of the flanges 'of the inner channel 4 abutting against the inner face of the web of -the outer channel 3, as shown in Fig. 3, whereby to present two grooves respectively between adjacent pairs of flanges. The upper sash 1 is slidable in one groove and the lower sash 2 is slidable in the other groove in each jamb. 5 denotes pairs of co-axial holes formed in the fianges of each of the inner channels 4 the axis of which is normal to the plane of the sash, there being arranged to protrude through the holes 5, friction members in the form of segments of spheres 6, said segments 6 being urged to move apart by springs 7. Each segment 6 is formed with a flange 8 to act as a stop to prevent the segment from being moved outwardly through the associated hole when the respective window sash is not in the position to limit outward movement of the segment.

As shown in Fig. 2, 9 denotes a fixed transom located between the sashes 1 and 2, the lower edge of the upper sash 1 being always below the level of the transom 9, as can be seen clearly in Fig. 2, to prevent rain from being blown through the narrow space between the sash 1 and the transom 9. The transom 9 supports a lock constituted by a vertical rod 10 carrying radial arms 11 and 12 respectively at its ends. The arm 11 presents a springloaded pin 13 engageable with a socket 14 in the transom 9 when the arm projects at right angles to the planes of the sashes 1 and 2 as shown in Fig. 2.

As shown in Figs. l, 2 and 3, 15 denotes a window case supporting, in addition to the jambs of the movable sashes,

2,893,072 n Patented .uly 7, 1959 ICC " a fixed sash 16 and a sill member 17 presenting aY main sill 17A, and a weatherprooling sill 17B at a higher level than thevmain sill 17A. A18 denotes an edging bar embracing the lower transverse edge of the pane of the sash 2, the bar V18 presenting a seat resting on the sill 17B and a tongue 19 projecting below the level of the weatherproofing sill 17B whereby to prevent'r'ain from being blown past the sill 17B. 20 denotes a lifting rail integral with the edging bar 18. Referring particularly to Fig. 4, the transom 9` is formed with a dovetail groove 21 and with a vertical passage 22. 23 denotes a slide engaged with the groove 21. v

In practice, the sashes 1 and 2 are raised'or lowered by sliding them in their respective grooves presented between the flanges of the channels 3 and 4. The springloaded segments of spheres 6 in pressing against the sashes move them into engagement with the opposite flanges of the channels 4 to provide good weather sealing and in any desired position, the flange 8 on each segment 6 preventing the associated segment 6 from moving too far through the associated hole S in the channel 4 when the associated pane is in a position remote from that segment 6.

The window may be locked by swinging the rod 10 passing through the transom 9 to the position shown in Fig. 2 in which the radial arms 11 and 12 project respectively into the paths of the lower and the upper sashes 1 and 2, the spring-loaded pin 13 being thereupon engaged with the socket 14 whereby to resist interference from the outside of the window.

Where a room is fitted with a window assembly incorporating a transom having a transverse passage as in Fig. 4 the room may be ventilated without opening either sash by moving the slide 23 to a position to expose the desired area of the passage 22. Asthe passage 22 can be arranged on the ltransom 9 in a position not to interfere with the lock, the window can remain locked while providing adequate ventilation. An additional advantage of this type of ventilation lies in the fact that the stream of Ventilating air is directed upwardly thereby keeping the pane of the upper sash free of condensation and also providing draught-free ventilation.

What is claimed is:

l. A window assembly including two window jambs provided with vertically-extending grooves, an upper sash and a lower sash supported by said jambs in the grooves thereof, at least one of said sashes being movable up and down in the grooves in which it is mounted, at least one `frlction member mounted in a side wall of each of the grooves in which said movable sash is mounted, each friction member being located adjacent to the side face of said movable sash and movable along a line normal to the plane of said movable sash, and spring means urglng each friction member into engagement with the adjacent side face of said movable sash to press the opposite side face of said movable sash into contact with the other side wall of each of said grooves in which said movable sash is mounted, whereby said movable sash is held at the vertical position to which it is moved.

2. A window assembly including two window jambs each comprising an outer channel and an inner channel located within the bosom of said outer channel and fixed to said outer channel with the edges of the flanges of said inner channel abutting against the inner face of the web of said outer channel, grooves being presented by the gaps between the adjacent flanges of said inner channel and said outer channel, an upper sash and a lower sash supported by said jambs, at least one of said sashes being movable in a particular one of said grooves in each jamb, at least one of the iianges constituting the side walls of said particular groove in each jamb being provided with at least one hole opposite the adjacent face of the movablesash; afriction .member Acooperating with' said liole,

and sspringmeansurgingY said friction -memben to .protrude through the hole into engagement with the adjacent face of, said movable sash to press said sash into engagement with the Yother'll'ange onsttutingftle other: side-wall of said"parteular groove. 3.' A1wif1doWassen1Bh/as claimedin'claimZ, inwhich said` fi'iction` memb'eifs. are' in' the form of" segments? of. spheres. 'l j 4. A window assembly/tas claime'diin c1air'n.3', in whichv eachsegmentpresents ajange adaptedto function as astop to limitV the movement. ofjithe segment :through the associatedhole. inihefparticnlar lia-nge.,-I` 5. Avwindovwass.ennl'ly as` claimedfin claimY 2, in whichY the anges of said inner channel are'zprovided with- 'at least one'Y settol coaxiaLhols; twafiictionmembersf each of whicliliyassociatedwthla; respective hule; and spring". means'llocated between said itwoffriction members to' urgeV protrndethrougmlsaid. holes.

References Cited .in the le of this patent UNITED STATES PATENTS Outwaite Oct. 2, 1883 Erklin ..l. Aug. 11, 1896 Bagby July 7, 1908 Simonson.. Feb. 19, 1918 loda Mar. 6, 1923- Sylvan Oct. 12, 192'6l Matschke, 1 Dec; 3 1', 1929 Marschke Apr. 26, 1932 otefman Aug.' Glaserr vv Aug. 24, 1937 Tomsche Mar. 11, 1952 FOREIGN PATENTS Great Britain Iulyv1f719.30

UNTTED STATES PATENT OFFICE CERTIFCATE 0F CORRECTION Patent No 29893,@'72 July '7, 1959 John Marchbank It is hereby certified that error appears n the-printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

present a degree of resistance sufficient to hold the eashes Signed end sealed this 3rd day of November 1959.,

(SEAL) Attest:

KARL H v AXLINE Attesting Officer ROBERT C. WATSON Commissioner of Patents 

